This pair of natural-color images from Taiwan's Formosat-2 satellite shows the lake on May 22 (top) and May 26 (bottom). The differences in color (especially the color of the lake) are probably due to the viewing conditions (viewing angle and time of day) during the satellite overpass, and not to actual changes in water clarity. Compared to a previous series of earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=18034 images that documented the filling of the lake, these images show much less change over the four-day period. The lack of obvious change may be an indication that the diversion channels being dug by Chinese engineers and soldiers had begun to drain the dangerous lake, or that the water had found natural outlets. It is also possible that the lake simply seems to be filling more slowly because of its increasingly large surface area.
www.nspo.org.tw/2005e/projects/project2/intro.htm Formosat image © 2008 myweb.ncku.edu.tw/~ccliu88/ Dr. Cheng-Chien Liu, National Cheng-Kung University, and Dr. An-Ming Wu, www.nspo.org.tw/2005e/ National Space Organization, Taiwan. Caption by Rebecca Lindsey.